If the instantiation is a physical item, instantiationStandard can be used to refer to the broadcast standard of the video signal (e.g. NTSC, PAL), or the audio encoding (e.g. Dolby A, vertical cut). If the instantiation is a digital item, instantiationStandard should be used to express the container format of the digital file (e.g. MXF).
Best Practice: While the usage described in the definition is best practice for 2.1, this usage is likely to change if new elements are added for PBCore 3.0.
Usage: optional, not repeatable
- profile: optional | The profile attribute is used to further quantify the profile of the container format (e.g. Op1a). Can be used as a notes field to include any additional information about the element or associated attributes.
- source: optional | The source attribute provides the name of the authority used to declare the value of the element. Required attribute for pbcoreIdentifier and instantiationIdentifier elements. Can be used as an attribute of any element.
- ref: optional | The ref attribute is used to supply a source’s URI for the value of the element. Can be used as an attribute of any element.
- version: optional | The version attribute identifies any version information about the authority or convention used to express data of this element. Can be used as an attribute of any element.
- annotation: optional | The annotation attribute includes narrative information intended to clarify the nature of data used in the element. Can be used as an attribute of any element.
This element does not have any subelements.
<instantiationStandard source="Sustainability of Digital Formats Planning for Library of Congress Collections" ref=” https://www.loc.gov/preservation/digital/formats/fdd/fdd000266.shtml”>MXF OP1a</instantiationStandard>